Dr. Leonardo is the Hobbs family's pediatrician. He is played by Jon Favreau.
After Walter bails Buddy out of jail, he takes Buddy to the doctor for a DNA test, which confirms that Buddy is Walter's son. The doctor convinces Walter to take Buddy home to meet his step mother Emily and twelve-year-old half brother Michael. Walter asks if Buddy is insane and Dr Leonardo runs a psychology test on him.
- Jon Favreau was the director of the film